/**
 * bxslider v4.1.1 - fully loaded, responsive content slider
 * http://bxslider.com
 *
 * copyright 2013, steven wanderski - http://stevenwanderski.com - http://bxcreative.com
 * written while drinking belgian ales and listening to jazz
 *
 * released under the mit license - http://opensource.org/licenses/mit
 */

;(function($){

	var plugin = {};

	var defaults = {

		// general
		mode: 'horizontal',
		slideselector: '',
		infiniteloop: true,
		hidecontrolonend: false,
		speed: 500,
		easing: null,
		slidemargin: 0,
		startslide: 0,
		randomstart: false,
		captions: false,
		ticker: false,
		tickerhover: false,
		adaptiveheight: false,
		adaptiveheightspeed: 500,
		video: false,
		usecss: true,
		preloadimages: 'visible',
		responsive: true,

		// touch
		touchenabled: true,
		swipethreshold: 50,
		onetoonetouch: true,
		preventdefaultswipex: true,
		preventdefaultswipey: false,

		// pager
		pager: true,
		pagertype: 'full',
		pagershortseparator: ' / ',
		pagerselector: null,
		buildpager: null,
		pagercustom: null,

		// controls
		controls: true,
		nexttext: 'next',
		prevtext: 'prev',
		nextselector: null,
		prevselector: null,
		autocontrols: false,
		starttext: 'start',
		stoptext: 'stop',
		autocontrolscombine: false,
		autocontrolsselector: null,

		// auto
		auto: false,
		pause: 4000,
		autostart: true,
		autodirection: 'next',
		autohover: false,
		autodelay: 0,

		// carousel
		minslides: 1,
		maxslides: 1,
		moveslides: 0,
		slidewidth: 0,

		// callbacks
		onsliderload: function() {},
		onslidebefore: function() {},
		onslideafter: function() {},
		onslidenext: function() {},
		onslideprev: function() {}
	}

	$.fn.bxslider = function(options){

		if(this.length == 0) return this;

		// support mutltiple elements
		if(this.length > 1){
			this.each(function(){$(this).bxslider(options)});
			return this;
		}

		// create a namespace to be used throughout the plugin
		var slider = {};
		// set a reference to our slider element
		var el = this;
		plugin.el = this;

		/**
		 * makes slideshow responsive
		 */
		// first get the original window dimens (thanks alot ie)
		var windowwidth = $(window).width();
		var windowheight = $(window).height();



		/**
		 * ===================================================================================
		 * = private functions
		 * ===================================================================================
		 */

		/**
		 * initializes namespace settings to be used throughout plugin
		 */
		var init = function(){
			// merge user-supplied options with the defaults
			slider.settings = $.extend({}, defaults, options);
			// parse slidewidth setting
			slider.settings.slidewidth = parseint(slider.settings.slidewidth);
			// store the original children
			slider.children = el.children(slider.settings.slideselector);
			// check if actual number of slides is less than minslides / maxslides
			if(slider.children.length < slider.settings.minslides) slider.settings.minslides = slider.children.length;
			if(slider.children.length < slider.settings.maxslides) slider.settings.maxslides = slider.children.length;
			// if random start, set the startslide setting to random number
			if(slider.settings.randomstart) slider.settings.startslide = math.floor(math.random() * slider.children.length);
			// store active slide information
			slider.active = { index: slider.settings.startslide }
			// store if the slider is in carousel mode (displaying / moving multiple slides)
			slider.carousel = slider.settings.minslides > 1 || slider.settings.maxslides > 1;
			// if carousel, force preloadimages = 'all'
			if(slider.carousel) slider.settings.preloadimages = 'all';
			// calculate the min / max width thresholds based on min / max number of slides
			// used to setup and update carousel slides dimensions
			slider.minthreshold = (slider.settings.minslides * slider.settings.slidewidth) + ((slider.settings.minslides - 1) * slider.settings.slidemargin);
			slider.maxthreshold = (slider.settings.maxslides * slider.settings.slidewidth) + ((slider.settings.maxslides - 1) * slider.settings.slidemargin);
			// store the current state of the slider (if currently animating, working is true)
			slider.working = false;
			// initialize the controls object
			slider.controls = {};
			// initialize an auto interval
			slider.interval = null;
			// determine which property to use for transitions
			slider.animprop = slider.settings.mode == 'vertical' ? 'top' : 'left';
			// determine if hardware acceleration can be used
			slider.usingcss = slider.settings.usecss && slider.settings.mode != 'fade' && (function(){
				// create our test div element
				var div = document.createelement('div');
				// css transition properties
				var props = ['webkitperspective', 'mozperspective', 'operspective', 'msperspective'];
				// test for each property
				for(var i in props){
					if(div.style[props[i]] !== undefined){
						slider.cssprefix = props[i].replace('perspective', '').tolowercase();
						slider.animprop = '-' + slider.cssprefix + '-transform';
						return true;
					}
				}
				return false;
			}());
			// if vertical mode always make maxslides and minslides equal
			if(slider.settings.mode == 'vertical') slider.settings.maxslides = slider.settings.minslides;
			// save original style data
			el.data("origstyle", el.attr("style"));
			el.children(slider.settings.slideselector).each(function() {
			  $(this).data("origstyle", $(this).attr("style"));
			});
			// perform all dom / css modifications
			setup();
		}

		/**
		 * performs all dom and css modifications
		 */
		var setup = function(){
			// wrap el in a wrapper
			el.wrap('<div class="bx-wrapper"><div class="bx-viewport"></div></div>');
			// store a namspace reference to .bx-viewport
			slider.viewport = el.parent();
			// add a loading div to display while images are loading
			slider.loader = $('<div class="bx-loading" />');
			slider.viewport.prepend(slider.loader);
			// set el to a massive width, to hold any needed slides
			// also strip any margin and padding from el
			el.css({
				width: slider.settings.mode == 'horizontal' ? (slider.children.length * 100 + 215) + '%' : 'auto',
				position: 'relative'
			});
			// if using css, add the easing property
			if(slider.usingcss && slider.settings.easing){
				el.css('-' + slider.cssprefix + '-transition-timing-function', slider.settings.easing);
			// if not using css and no easing value was supplied, use the default js animation easing (swing)
			}else if(!slider.settings.easing){
				slider.settings.easing = 'swing';
			}
			var slidesshowing = getnumberslidesshowing();
			// make modifications to the viewport (.bx-viewport)
			slider.viewport.css({
				width: '100%',
				overflow: 'hidden',
				position: 'relative'
			});
			slider.viewport.parent().css({
				maxwidth: getviewportmaxwidth()
			});
			// make modification to the wrapper (.bx-wrapper)
			if(!slider.settings.pager) {
				slider.viewport.parent().css({
				margin: '0 auto 0px'
				});
			}
			// apply css to all slider children
			slider.children.css({
				'float': slider.settings.mode == 'horizontal' ? 'left' : 'none',
				liststyle: 'none',
				position: 'relative'
			});
			// apply the calculated width after the float is applied to prevent scrollbar interference
			slider.children.css('width', getslidewidth());
			// if slidemargin is supplied, add the css
			if(slider.settings.mode == 'horizontal' && slider.settings.slidemargin > 0) slider.children.css('marginright', slider.settings.slidemargin);
			if(slider.settings.mode == 'vertical' && slider.settings.slidemargin > 0) slider.children.css('marginbottom', slider.settings.slidemargin);
			// if "fade" mode, add positioning and z-index css
			if(slider.settings.mode == 'fade'){
				slider.children.css({
					position: 'absolute',
					zindex: 0,
					display: 'none'
				});
				// prepare the z-index on the showing element
				slider.children.eq(slider.settings.startslide).css({zindex: 50, display: 'block'});
			}
			// create an element to contain all slider controls (pager, start / stop, etc)
			slider.controls.el = $('<div class="bx-controls" />');
			// if captions are requested, add them
			if(slider.settings.captions) appendcaptions();
			// check if startslide is last slide
			slider.active.last = slider.settings.startslide == getpagerqty() - 1;
			// if video is true, set up the fitvids plugin
			if(slider.settings.video) el.fitvids();
			// set the default preload selector (visible)
			var preloadselector = slider.children.eq(slider.settings.startslide);
			if (slider.settings.preloadimages == "all") preloadselector = slider.children;
			// only check for control addition if not in "ticker" mode
			if(!slider.settings.ticker){
				// if pager is requested, add it
				if(slider.settings.pager) appendpager();
				// if controls are requested, add them
				if(slider.settings.controls) appendcontrols();
				// if auto is true, and auto controls are requested, add them
				if(slider.settings.auto && slider.settings.autocontrols) appendcontrolsauto();
				// if any control option is requested, add the controls wrapper
				if(slider.settings.controls || slider.settings.autocontrols || slider.settings.pager) slider.viewport.after(slider.controls.el);
			// if ticker mode, do not allow a pager
			}else{
				slider.settings.pager = false;
			}
			// preload all images, then perform final dom / css modifications that depend on images being loaded
			loadelements(preloadselector, start);
		}

		var loadelements = function(selector, callback){
			var total = selector.find('img, iframe').length;
			if (total == 0){
				callback();
				return;
			}
			var count = 0;
			selector.find('img, iframe').each(function(){
				$(this).one('load', function() {
				  if(++count == total) callback();
				}).each(function() {
				  if(this.complete) $(this).load();
				});
			});
		}

		/**
		 * start the slider
		 */
		var start = function(){
			// if infinite loop, prepare additional slides
			if(slider.settings.infiniteloop && slider.settings.mode != 'fade' && !slider.settings.ticker){
				var slice = slider.settings.mode == 'vertical' ? slider.settings.minslides : slider.settings.maxslides;
				var sliceappend = slider.children.slice(0, slice).clone().addclass('bx-clone');
				var sliceprepend = slider.children.slice(-slice).clone().addclass('bx-clone');
				el.append(sliceappend).prepend(sliceprepend);
			}
			// remove the loading dom element
			slider.loader.remove();
			// set the left / top position of "el"
			setslideposition();
			// if "vertical" mode, always use adaptiveheight to prevent odd behavior
			if (slider.settings.mode == 'vertical') slider.settings.adaptiveheight = true;
			// set the viewport height
			slider.viewport.height(getviewportheight());
			// make sure everything is positioned just right (same as a window resize)
			el.redrawslider();
			// onsliderload callback
			slider.settings.onsliderload(slider.active.index);
			// slider has been fully initialized
			slider.initialized = true;
			// bind the resize call to the window
			if (slider.settings.responsive) $(window).bind('resize', resizewindow);
			// if auto is true, start the show
			if (slider.settings.auto && slider.settings.autostart) initauto();
			// if ticker is true, start the ticker
			if (slider.settings.ticker) initticker();
			// if pager is requested, make the appropriate pager link active
			if (slider.settings.pager) updatepageractive(slider.settings.startslide);
			// check for any updates to the controls (like hidecontrolonend updates)
			if (slider.settings.controls) updatedirectioncontrols();
			// if touchenabled is true, setup the touch events
			if (slider.settings.touchenabled && !slider.settings.ticker) inittouch();
		}

		/**
		 * returns the calculated height of the viewport, used to determine either adaptiveheight or the maxheight value
		 */
		var getviewportheight = function(){
			var height = 0;
			// first determine which children (slides) should be used in our height calculation
			var children = $();
			// if mode is not "vertical" and adaptiveheight is false, include all children
			if(slider.settings.mode != 'vertical' && !slider.settings.adaptiveheight){
				children = slider.children;
			}else{
				// if not carousel, return the single active child
				if(!slider.carousel){
					children = slider.children.eq(slider.active.index);
				// if carousel, return a slice of children
				}else{
					// get the individual slide index
					var currentindex = slider.settings.moveslides == 1 ? slider.active.index : slider.active.index * getmoveby();
					// add the current slide to the children
					children = slider.children.eq(currentindex);
					// cycle through the remaining "showing" slides
					for (i = 1; i <= slider.settings.maxslides - 1; i++){
						// if looped back to the start
						if(currentindex + i >= slider.children.length){
							children = children.add(slider.children.eq(i - 1));
						}else{
							children = children.add(slider.children.eq(currentindex + i));
						}
					}
				}
			}
			// if "vertical" mode, calculate the sum of the heights of the children
			if(slider.settings.mode == 'vertical'){
				children.each(function(index) {
				  height += $(this).outerheight();
				});
				// add user-supplied margins
				if(slider.settings.slidemargin > 0){
					height += slider.settings.slidemargin * (slider.settings.minslides - 1);
				}
			// if not "vertical" mode, calculate the max height of the children
			}else{
				height = math.max.apply(math, children.map(function(){
					return $(this).outerheight(false);
				}).get());
			}
			return height;
		}

		/**
		 * returns the calculated width to be used for the outer wrapper / viewport
		 */
		var getviewportmaxwidth = function(){
			var width = '100%';
			if(slider.settings.slidewidth > 0){
				if(slider.settings.mode == 'horizontal'){
					width = (slider.settings.maxslides * slider.settings.slidewidth) + ((slider.settings.maxslides - 1) * slider.settings.slidemargin);
				}else{
					width = slider.settings.slidewidth;
				}
			}
			return width;
		}

		/**
		 * returns the calculated width to be applied to each slide
		 */
		var getslidewidth = function(){
			// start with any user-supplied slide width
			var newelwidth = slider.settings.slidewidth;
			// get the current viewport width
			var wrapwidth = slider.viewport.width();
			// if slide width was not supplied, or is larger than the viewport use the viewport width
			if(slider.settings.slidewidth == 0 ||
				(slider.settings.slidewidth > wrapwidth && !slider.carousel) ||
				slider.settings.mode == 'vertical'){
				newelwidth = wrapwidth;
			// if carousel, use the thresholds to determine the width
			}else if(slider.settings.maxslides > 1 && slider.settings.mode == 'horizontal'){
				if(wrapwidth > slider.maxthreshold){
					// newelwidth = (wrapwidth - (slider.settings.slidemargin * (slider.settings.maxslides - 1))) / slider.settings.maxslides;
				}else if(wrapwidth < slider.minthreshold){
					newelwidth = (wrapwidth - (slider.settings.slidemargin * (slider.settings.minslides - 1))) / slider.settings.minslides;
				}
			}
			return newelwidth;
		}

		/**
		 * returns the number of slides currently visible in the viewport (includes partially visible slides)
		 */
		var getnumberslidesshowing = function(){
			var slidesshowing = 1;
			if(slider.settings.mode == 'horizontal' && slider.settings.slidewidth > 0){
				// if viewport is smaller than minthreshold, return minslides
				if(slider.viewport.width() < slider.minthreshold){
					slidesshowing = slider.settings.minslides;
				// if viewport is larger than minthreshold, return maxslides
				}else if(slider.viewport.width() > slider.maxthreshold){
					slidesshowing = slider.settings.maxslides;
				// if viewport is between min / max thresholds, divide viewport width by first child width
				}else{
					var childwidth = slider.children.first().width();
					slidesshowing = math.floor(slider.viewport.width() / childwidth);
				}
			// if "vertical" mode, slides showing will always be minslides
			}else if(slider.settings.mode == 'vertical'){
				slidesshowing = slider.settings.minslides;
			}
			return slidesshowing;
		}

		/**
		 * returns the number of pages (one full viewport of slides is one "page")
		 */
		var getpagerqty = function(){
			var pagerqty = 0;
			// if moveslides is specified by the user
			if(slider.settings.moveslides > 0){
				if(slider.settings.infiniteloop){
					pagerqty = slider.children.length / getmoveby();
				}else{
					// use a while loop to determine pages
					var breakpoint = 0;
					var counter = 0
					// when breakpoint goes above children length, counter is the number of pages
					while (breakpoint < slider.children.length){
						++pagerqty;
						breakpoint = counter + getnumberslidesshowing();
						counter += slider.settings.moveslides <= getnumberslidesshowing() ? slider.settings.moveslides : getnumberslidesshowing();
					}
				}
			// if moveslides is 0 (auto) divide children length by sides showing, then round up
			}else{
				pagerqty = math.ceil(slider.children.length / getnumberslidesshowing());
			}
			return pagerqty;
		}

		/**
		 * returns the number of indivual slides by which to shift the slider
		 */
		var getmoveby = function(){
			// if moveslides was set by the user and moveslides is less than number of slides showing
			if(slider.settings.moveslides > 0 && slider.settings.moveslides <= getnumberslidesshowing()){
				return slider.settings.moveslides;
			}
			// if moveslides is 0 (auto)
			return getnumberslidesshowing();
		}

		/**
		 * sets the slider's (el) left or top position
		 */
		var setslideposition = function(){
			// if last slide, not infinite loop, and number of children is larger than specified maxslides
			if(slider.children.length > slider.settings.maxslides && slider.active.last && !slider.settings.infiniteloop){
				if (slider.settings.mode == 'horizontal'){
					// get the last child's position
					var lastchild = slider.children.last();
					var position = lastchild.position();
					// set the left position
					setpositionproperty(-(position.left - (slider.viewport.width() - lastchild.width())), 'reset', 0);
				}else if(slider.settings.mode == 'vertical'){
					// get the last showing index's position
					var lastshowingindex = slider.children.length - slider.settings.minslides;
					var position = slider.children.eq(lastshowingindex).position();
					// set the top position
					setpositionproperty(-position.top, 'reset', 0);
				}
			// if not last slide
			}else{
				// get the position of the first showing slide
				var position = slider.children.eq(slider.active.index * getmoveby()).position();
				// check for last slide
				if (slider.active.index == getpagerqty() - 1) slider.active.last = true;
				// set the repective position
				if (position != undefined){
					if (slider.settings.mode == 'horizontal') setpositionproperty(-position.left, 'reset', 0);
					else if (slider.settings.mode == 'vertical') setpositionproperty(-position.top, 'reset', 0);
				}
			}
		}

		/**
		 * sets the el's animating property position (which in turn will sometimes animate el).
		 * if using css, sets the transform property. if not using css, sets the top / left property.
		 *
		 * @param value (int)
		 *  - the animating property's value
		 *
		 * @param type (string) 'slider', 'reset', 'ticker'
		 *  - the type of instance for which the function is being
		 *
		 * @param duration (int)
		 *  - the amount of time (in ms) the transition should occupy
		 *
		 * @param params (array) optional
		 *  - an optional parameter containing any variables that need to be passed in
		 */
		var setpositionproperty = function(value, type, duration, params){
			// use css transform
			if(slider.usingcss){
				// determine the translate3d value
				var propvalue = slider.settings.mode == 'vertical' ? 'translate3d(0, ' + value + 'px, 0)' : 'translate3d(' + value + 'px, 0, 0)';
				// add the css transition-duration
				el.css('-' + slider.cssprefix + '-transition-duration', duration / 1000 + 's');
				if(type == 'slide'){
					// set the property value
					el.css(slider.animprop, propvalue);
					// bind a callback method - executes when css transition completes
					el.bind('transitionend webkittransitionend otransitionend mstransitionend', function(){
						// unbind the callback
						el.unbind('transitionend webkittransitionend otransitionend mstransitionend');
						updateafterslidetransition();
					});
				}else if(type == 'reset'){
					el.css(slider.animprop, propvalue);
				}else if(type == 'ticker'){
					// make the transition use 'linear'
					el.css('-' + slider.cssprefix + '-transition-timing-function', 'linear');
					el.css(slider.animprop, propvalue);
					// bind a callback method - executes when css transition completes
					el.bind('transitionend webkittransitionend otransitionend mstransitionend', function(){
						// unbind the callback
						el.unbind('transitionend webkittransitionend otransitionend mstransitionend');
						// reset the position
						setpositionproperty(params['resetvalue'], 'reset', 0);
						// start the loop again
						tickerloop();
					});
				}
			// use js animate
			}else{
				var animateobj = {};
				animateobj[slider.animprop] = value;
				if(type == 'slide'){
					el.animate(animateobj, duration, slider.settings.easing, function(){
						updateafterslidetransition();
					});
				}else if(type == 'reset'){
					el.css(slider.animprop, value)
				}else if(type == 'ticker'){
					el.animate(animateobj, speed, 'linear', function(){
						setpositionproperty(params['resetvalue'], 'reset', 0);
						// run the recursive loop after animation
						tickerloop();
					});
				}
			}
		}

		/**
		 * populates the pager with proper amount of pages
		 */
		var populatepager = function(){
			var pagerhtml = '';
			var pagerqty = getpagerqty();
			// loop through each pager item
			for(var i=0; i < pagerqty; i++){
				var linkcontent = '';
				// if a buildpager function is supplied, use it to get pager link value, else use index + 1
				if(slider.settings.buildpager && $.isfunction(slider.settings.buildpager)){
					linkcontent = slider.settings.buildpager(i);
					slider.pagerel.addclass('bx-custom-pager');
				}else{
					linkcontent = i + 1;
					slider.pagerel.addclass('bx-default-pager');
				}
				// var linkcontent = slider.settings.buildpager && $.isfunction(slider.settings.buildpager) ? slider.settings.buildpager(i) : i + 1;
				// add the markup to the string
				pagerhtml += '<div class="bx-pager-item"><a href="" data-slide-index="' + i + '" class="bx-pager-link">' + linkcontent + '</a></div>';
			};
			// populate the pager element with pager links
			slider.pagerel.html(pagerhtml);
		}

		/**
		 * appends the pager to the controls element
		 */
		var appendpager = function(){
			if(!slider.settings.pagercustom){
				// create the pager dom element
				slider.pagerel = $('<div class="bx-pager" />');
				// if a pager selector was supplied, populate it with the pager
				if(slider.settings.pagerselector){
					$(slider.settings.pagerselector).html(slider.pagerel);
				// if no pager selector was supplied, add it after the wrapper
				}else{
					slider.controls.el.addclass('bx-has-pager').append(slider.pagerel);
				}
				// populate the pager
				populatepager();
			}else{
				slider.pagerel = $(slider.settings.pagercustom);
			}
			// assign the pager click binding
			slider.pagerel.delegate('a', 'click', clickpagerbind);
		}

		/**
		 * appends prev / next controls to the controls element
		 */
		var appendcontrols = function(){
			slider.controls.next = $('<a class="bx-next" href="">' + slider.settings.nexttext + '</a>');
			slider.controls.prev = $('<a class="bx-prev" href="">' + slider.settings.prevtext + '</a>');
			// bind click actions to the controls
			slider.controls.next.bind('click', clicknextbind);
			slider.controls.prev.bind('click', clickprevbind);
			// if nextslector was supplied, populate it
			if(slider.settings.nextselector){
				$(slider.settings.nextselector).append(slider.controls.next);
			}
			// if prevslector was supplied, populate it
			if(slider.settings.prevselector){
				$(slider.settings.prevselector).append(slider.controls.prev);
			}
			// if no custom selectors were supplied
			if(!slider.settings.nextselector && !slider.settings.prevselector){
				// add the controls to the dom
				slider.controls.directionel = $('<div class="bx-controls-direction" />');
				// add the control elements to the directionel
				slider.controls.directionel.append(slider.controls.prev).append(slider.controls.next);
				// slider.viewport.append(slider.controls.directionel);
				slider.controls.el.addclass('bx-has-controls-direction').append(slider.controls.directionel);
			}
		}

		/**
		 * appends start / stop auto controls to the controls element
		 */
		var appendcontrolsauto = function(){
			slider.controls.start = $('<div class="bx-controls-auto-item"><a class="bx-start" href="">' + slider.settings.starttext + '</a></div>');
			slider.controls.stop = $('<div class="bx-controls-auto-item"><a class="bx-stop" href="">' + slider.settings.stoptext + '</a></div>');
			// add the controls to the dom
			slider.controls.autoel = $('<div class="bx-controls-auto" />');
			// bind click actions to the controls
			slider.controls.autoel.delegate('.bx-start', 'click', clickstartbind);
			slider.controls.autoel.delegate('.bx-stop', 'click', clickstopbind);
			// if autocontrolscombine, insert only the "start" control
			if(slider.settings.autocontrolscombine){
				slider.controls.autoel.append(slider.controls.start);
			// if autocontrolscombine is false, insert both controls
			}else{
				slider.controls.autoel.append(slider.controls.start).append(slider.controls.stop);
			}
			// if auto controls selector was supplied, populate it with the controls
			if(slider.settings.autocontrolsselector){
				$(slider.settings.autocontrolsselector).html(slider.controls.autoel);
			// if auto controls selector was not supplied, add it after the wrapper
			}else{
				slider.controls.el.addclass('bx-has-controls-auto').append(slider.controls.autoel);
			}
			// update the auto controls
			updateautocontrols(slider.settings.autostart ? 'stop' : 'start');
		}

		/**
		 * appends image captions to the dom
		 */
		var appendcaptions = function(){
			// cycle through each child
			slider.children.each(function(index){
				// get the image title attribute
				var title = $(this).find('img:first').attr('title');
				// append the caption
				if (title != undefined && ('' + title).length) {
                    $(this).append('<div class="bx-caption"><span>' + title + '</span></div>');
                }
			});
		}

		/**
		 * click next binding
		 *
		 * @param e (event)
		 *  - dom event object
		 */
		var clicknextbind = function(e){
			// if auto show is running, stop it
			if (slider.settings.auto) el.stopauto();
			el.gotonextslide();
			e.preventdefault();
		}

		/**
		 * click prev binding
		 *
		 * @param e (event)
		 *  - dom event object
		 */
		var clickprevbind = function(e){
			// if auto show is running, stop it
			if (slider.settings.auto) el.stopauto();
			el.gotoprevslide();
			e.preventdefault();
		}

		/**
		 * click start binding
		 *
		 * @param e (event)
		 *  - dom event object
		 */
		var clickstartbind = function(e){
			el.startauto();
			e.preventdefault();
		}

		/**
		 * click stop binding
		 *
		 * @param e (event)
		 *  - dom event object
		 */
		var clickstopbind = function(e){
			el.stopauto();
			e.preventdefault();
		}

		/**
		 * click pager binding
		 *
		 * @param e (event)
		 *  - dom event object
		 */
		var clickpagerbind = function(e){
			// if auto show is running, stop it
			if (slider.settings.auto) el.stopauto();
			var pagerlink = $(e.currenttarget);
			var pagerindex = parseint(pagerlink.attr('data-slide-index'));
			// if clicked pager link is not active, continue with the gotoslide call
			if(pagerindex != slider.active.index) el.gotoslide(pagerindex);
			e.preventdefault();
		}

		/**
		 * updates the pager links with an active class
		 *
		 * @param slideindex (int)
		 *  - index of slide to make active
		 */
		var updatepageractive = function(slideindex){
			// if "short" pager type
			var len = slider.children.length; // nb of children
			if(slider.settings.pagertype == 'short'){
				if(slider.settings.maxslides > 1) {
					len = math.ceil(slider.children.length/slider.settings.maxslides);
				}
				slider.pagerel.html( (slideindex + 1) + slider.settings.pagershortseparator + len);
				return;
			}
			// remove all pager active classes
			slider.pagerel.find('a').removeclass('active');
			// apply the active class for all pagers
			slider.pagerel.each(function(i, el) { $(el).find('a').eq(slideindex).addclass('active'); });
		}

		/**
		 * performs needed actions after a slide transition
		 */
		var updateafterslidetransition = function(){
			// if infinte loop is true
			if(slider.settings.infiniteloop){
				var position = '';
				// first slide
				if(slider.active.index == 0){
					// set the new position
					position = slider.children.eq(0).position();
				// carousel, last slide
				}else if(slider.active.index == getpagerqty() - 1 && slider.carousel){
					position = slider.children.eq((getpagerqty() - 1) * getmoveby()).position();
				// last slide
				}else if(slider.active.index == slider.children.length - 1){
					position = slider.children.eq(slider.children.length - 1).position();
				}
				if (slider.settings.mode == 'horizontal') { setpositionproperty(-position.left, 'reset', 0);; }
				else if (slider.settings.mode == 'vertical') { setpositionproperty(-position.top, 'reset', 0);; }
			}
			// declare that the transition is complete
			slider.working = false;
			// onslideafter callback
			slider.settings.onslideafter(slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
		}

		/**
		 * updates the auto controls state (either active, or combined switch)
		 *
		 * @param state (string) "start", "stop"
		 *  - the new state of the auto show
		 */
		var updateautocontrols = function(state){
			// if autocontrolscombine is true, replace the current control with the new state
			if(slider.settings.autocontrolscombine){
				slider.controls.autoel.html(slider.controls[state]);
			// if autocontrolscombine is false, apply the "active" class to the appropriate control
			}else{
				slider.controls.autoel.find('a').removeclass('active');
				slider.controls.autoel.find('a:not(.bx-' + state + ')').addclass('active');
			}
		}

		/**
		 * updates the direction controls (checks if either should be hidden)
		 */
		var updatedirectioncontrols = function(){
			if(getpagerqty() == 1){
				slider.controls.prev.addclass('disabled');
				slider.controls.next.addclass('disabled');
			}else if(!slider.settings.infiniteloop && slider.settings.hidecontrolonend){
				// if first slide
				if (slider.active.index == 0){
					slider.controls.prev.addclass('disabled');
					slider.controls.next.removeclass('disabled');
				// if last slide
				}else if(slider.active.index == getpagerqty() - 1){
					slider.controls.next.addclass('disabled');
					slider.controls.prev.removeclass('disabled');
				// if any slide in the middle
				}else{
					slider.controls.prev.removeclass('disabled');
					slider.controls.next.removeclass('disabled');
				}
			}
		}

		/**
		 * initialzes the auto process
		 */
		var initauto = function(){
			// if autodelay was supplied, launch the auto show using a settimeout() call
			if(slider.settings.autodelay > 0){
				var timeout = settimeout(el.startauto, slider.settings.autodelay);
			// if autodelay was not supplied, start the auto show normally
			}else{
				el.startauto();
			}
			// if autohover is requested
			if(slider.settings.autohover){
				// on el hover
				el.hover(function(){
					// if the auto show is currently playing (has an active interval)
					if(slider.interval){
						// stop the auto show and pass true agument which will prevent control update
						el.stopauto(true);
						// create a new autopaused value which will be used by the relative "mouseout" event
						slider.autopaused = true;
					}
				}, function(){
					// if the autopaused value was created be the prior "mouseover" event
					if(slider.autopaused){
						// start the auto show and pass true agument which will prevent control update
						el.startauto(true);
						// reset the autopaused value
						slider.autopaused = null;
					}
				});
			}
		}

		/**
		 * initialzes the ticker process
		 */
		var initticker = function(){
			var startposition = 0;
			// if autodirection is "next", append a clone of the entire slider
			if(slider.settings.autodirection == 'next'){
				el.append(slider.children.clone().addclass('bx-clone'));
			// if autodirection is "prev", prepend a clone of the entire slider, and set the left position
			}else{
				el.prepend(slider.children.clone().addclass('bx-clone'));
				var position = slider.children.first().position();
				startposition = slider.settings.mode == 'horizontal' ? -position.left : -position.top;
			}
			setpositionproperty(startposition, 'reset', 0);
			// do not allow controls in ticker mode
			slider.settings.pager = false;
			slider.settings.controls = false;
			slider.settings.autocontrols = false;
			// if autohover is requested
			if(slider.settings.tickerhover && !slider.usingcss){
				// on el hover
				slider.viewport.hover(function(){
					el.stop();
				}, function(){
					// calculate the total width of children (used to calculate the speed ratio)
					var totaldimens = 0;
					slider.children.each(function(index){
					  totaldimens += slider.settings.mode == 'horizontal' ? $(this).outerwidth(true) : $(this).outerheight(true);
					});
					// calculate the speed ratio (used to determine the new speed to finish the paused animation)
					var ratio = slider.settings.speed / totaldimens;
					// determine which property to use
					var property = slider.settings.mode == 'horizontal' ? 'left' : 'top';
					// calculate the new speed
					var newspeed = ratio * (totaldimens - (math.abs(parseint(el.css(property)))));
					tickerloop(newspeed);
				});
			}
			// start the ticker loop
			tickerloop();
		}

		/**
		 * runs a continuous loop, news ticker-style
		 */
		var tickerloop = function(resumespeed){
			speed = resumespeed ? resumespeed : slider.settings.speed;
			var position = {left: 0, top: 0};
			var reset = {left: 0, top: 0};
			// if "next" animate left position to last child, then reset left to 0
			if(slider.settings.autodirection == 'next'){
				position = el.find('.bx-clone').first().position();
			// if "prev" animate left position to 0, then reset left to first non-clone child
			}else{
				reset = slider.children.first().position();
			}
			var animateproperty = slider.settings.mode == 'horizontal' ? -position.left : -position.top;
			var resetvalue = slider.settings.mode == 'horizontal' ? -reset.left : -reset.top;
			var params = {resetvalue: resetvalue};
			setpositionproperty(animateproperty, 'ticker', speed, params);
		}

		/**
		 * initializes touch events
		 */
		var inittouch = function(){
			// initialize object to contain all touch values
			slider.touch = {
				start: {x: 0, y: 0},
				end: {x: 0, y: 0}
			}
			slider.viewport.bind('touchstart', ontouchstart);
		}

		/**
		 * event handler for "touchstart"
		 *
		 * @param e (event)
		 *  - dom event object
		 */
		var ontouchstart = function(e){
			if(slider.working){
				e.preventdefault();
			}else{
				// record the original position when touch starts
				slider.touch.originalpos = el.position();
				var orig = e.originalevent;
				// record the starting touch x, y coordinates
				slider.touch.start.x = orig.changedtouches[0].pagex;
				slider.touch.start.y = orig.changedtouches[0].pagey;
				// bind a "touchmove" event to the viewport
				slider.viewport.bind('touchmove', ontouchmove);
				// bind a "touchend" event to the viewport
				slider.viewport.bind('touchend', ontouchend);
			}
		}

		/**
		 * event handler for "touchmove"
		 *
		 * @param e (event)
		 *  - dom event object
		 */
		var ontouchmove = function(e){
			var orig = e.originalevent;
			// if scrolling on y axis, do not prevent default
			var xmovement = math.abs(orig.changedtouches[0].pagex - slider.touch.start.x);
			var ymovement = math.abs(orig.changedtouches[0].pagey - slider.touch.start.y);
			// x axis swipe
			if((xmovement * 3) > ymovement && slider.settings.preventdefaultswipex){
				e.preventdefault();
			// y axis swipe
			}else if((ymovement * 3) > xmovement && slider.settings.preventdefaultswipey){
				e.preventdefault();
			}
			if(slider.settings.mode != 'fade' && slider.settings.onetoonetouch){
				var value = 0;
				// if horizontal, drag along x axis
				if(slider.settings.mode == 'horizontal'){
					var change = orig.changedtouches[0].pagex - slider.touch.start.x;
					value = slider.touch.originalpos.left + change;
				// if vertical, drag along y axis
				}else{
					var change = orig.changedtouches[0].pagey - slider.touch.start.y;
					value = slider.touch.originalpos.top + change;
				}
				setpositionproperty(value, 'reset', 0);
			}
		}

		/**
		 * event handler for "touchend"
		 *
		 * @param e (event)
		 *  - dom event object
		 */
		var ontouchend = function(e){
			slider.viewport.unbind('touchmove', ontouchmove);
			var orig = e.originalevent;
			var value = 0;
			// record end x, y positions
			slider.touch.end.x = orig.changedtouches[0].pagex;
			slider.touch.end.y = orig.changedtouches[0].pagey;
			// if fade mode, check if absolute x distance clears the threshold
			if(slider.settings.mode == 'fade'){
				var distance = math.abs(slider.touch.start.x - slider.touch.end.x);
				if(distance >= slider.settings.swipethreshold){
					slider.touch.start.x > slider.touch.end.x ? el.gotonextslide() : el.gotoprevslide();
					el.stopauto();
				}
			// not fade mode
			}else{
				var distance = 0;
				// calculate distance and el's animate property
				if(slider.settings.mode == 'horizontal'){
					distance = slider.touch.end.x - slider.touch.start.x;
					value = slider.touch.originalpos.left;
				}else{
					distance = slider.touch.end.y - slider.touch.start.y;
					value = slider.touch.originalpos.top;
				}
				// if not infinite loop and first / last slide, do not attempt a slide transition
				if(!slider.settings.infiniteloop && ((slider.active.index == 0 && distance > 0) || (slider.active.last && distance < 0))){
					setpositionproperty(value, 'reset', 200);
				}else{
					// check if distance clears threshold
					if(math.abs(distance) >= slider.settings.swipethreshold){
						distance < 0 ? el.gotonextslide() : el.gotoprevslide();
						el.stopauto();
					}else{
						// el.animate(property, 200);
						setpositionproperty(value, 'reset', 200);
					}
				}
			}
			slider.viewport.unbind('touchend', ontouchend);
		}

		/**
		 * window resize event callback
		 */
		var resizewindow = function(e){
			// get the new window dimens (again, thank you ie)
			var windowwidthnew = $(window).width();
			var windowheightnew = $(window).height();
			// make sure that it is a true window resize
			// *we must check this because our dinosaur friend ie fires a window resize event when certain dom elements
			// are resized. can you just die already?*
			if(windowwidth != windowwidthnew || windowheight != windowheightnew){
				// set the new window dimens
				windowwidth = windowwidthnew;
				windowheight = windowheightnew;
				// update all dynamic elements
				el.redrawslider();
			}
		}

		/**
		 * ===================================================================================
		 * = public functions
		 * ===================================================================================
		 */

		/**
		 * performs slide transition to the specified slide
		 *
		 * @param slideindex (int)
		 *  - the destination slide's index (zero-based)
		 *
		 * @param direction (string)
		 *  - internal use only - the direction of travel ("prev" / "next")
		 */
		el.gotoslide = function(slideindex, direction){
			// if plugin is currently in motion, ignore request
			if(slider.working || slider.active.index == slideindex) return;
			// declare that plugin is in motion
			slider.working = true;
			// store the old index
			slider.oldindex = slider.active.index;
			// if slideindex is less than zero, set active index to last child (this happens during infinite loop)
			if(slideindex < 0){
				slider.active.index = getpagerqty() - 1;
			// if slideindex is greater than children length, set active index to 0 (this happens during infinite loop)
			}else if(slideindex >= getpagerqty()){
				slider.active.index = 0;
			// set active index to requested slide
			}else{
				slider.active.index = slideindex;
			}
			// onslidebefore, onslidenext, onslideprev callbacks
			slider.settings.onslidebefore(slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
			if(direction == 'next'){
				slider.settings.onslidenext(slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
			}else if(direction == 'prev'){
				slider.settings.onslideprev(slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
			}
			// check if last slide
			slider.active.last = slider.active.index >= getpagerqty() - 1;
			// update the pager with active class
			if(slider.settings.pager) updatepageractive(slider.active.index);
			// // check for direction control update
			if(slider.settings.controls) updatedirectioncontrols();
			// if slider is set to mode: "fade"
			if(slider.settings.mode == 'fade'){
				// if adaptiveheight is true and next height is different from current height, animate to the new height
				if(slider.settings.adaptiveheight && slider.viewport.height() != getviewportheight()){
					slider.viewport.animate({height: getviewportheight()}, slider.settings.adaptiveheightspeed);
				}
				// fade out the visible child and reset its z-index value
				slider.children.filter(':visible').fadeout(slider.settings.speed).css({zindex: 0});
				// fade in the newly requested slide
				slider.children.eq(slider.active.index).css('zindex', 51).fadein(slider.settings.speed, function(){
					$(this).css('zindex', 50);
					updateafterslidetransition();
				});
			// slider mode is not "fade"
			}else{
				// if adaptiveheight is true and next height is different from current height, animate to the new height
				if(slider.settings.adaptiveheight && slider.viewport.height() != getviewportheight()){
					slider.viewport.animate({height: getviewportheight()}, slider.settings.adaptiveheightspeed);
				}
				var moveby = 0;
				var position = {left: 0, top: 0};
				// if carousel and not infinite loop
				if(!slider.settings.infiniteloop && slider.carousel && slider.active.last){
					if(slider.settings.mode == 'horizontal'){
						// get the last child position
						var lastchild = slider.children.eq(slider.children.length - 1);
						position = lastchild.position();
						// calculate the position of the last slide
						moveby = slider.viewport.width() - lastchild.outerwidth();
					}else{
						// get last showing index position
						var lastshowingindex = slider.children.length - slider.settings.minslides;
						position = slider.children.eq(lastshowingindex).position();
					}
					// horizontal carousel, going previous while on first slide (infiniteloop mode)
				}else if(slider.carousel && slider.active.last && direction == 'prev'){
					// get the last child position
					var eq = slider.settings.moveslides == 1 ? slider.settings.maxslides - getmoveby() : ((getpagerqty() - 1) * getmoveby()) - (slider.children.length - slider.settings.maxslides);
					var lastchild = el.children('.bx-clone').eq(eq);
					position = lastchild.position();
				// if infinite loop and "next" is clicked on the last slide
				}else if(direction == 'next' && slider.active.index == 0){
					// get the last clone position
					position = el.find('> .bx-clone').eq(slider.settings.maxslides).position();
					slider.active.last = false;
				// normal non-zero requests
				}else if(slideindex >= 0){
					var requestel = slideindex * getmoveby();
					position = slider.children.eq(requestel).position();
				}

				/* if the position doesn't exist
				 * (e.g. if you destroy the slider on a next click),
				 * it doesn't throw an error.
				 */
				if ("undefined" !== typeof(position)) {
					var value = slider.settings.mode == 'horizontal' ? -(position.left - moveby) : -position.top;
					// plugin values to be animated
					setpositionproperty(value, 'slide', slider.settings.speed);
				}
			}
		}

		/**
		 * transitions to the next slide in the show
		 */
		el.gotonextslide = function(){
			// if infiniteloop is false and last page is showing, disregard call
			if (!slider.settings.infiniteloop && slider.active.last) return;
			var pagerindex = parseint(slider.active.index) + 1;
			el.gotoslide(pagerindex, 'next');
		}

		/**
		 * transitions to the prev slide in the show
		 */
		el.gotoprevslide = function(){
			// if infiniteloop is false and last page is showing, disregard call
			if (!slider.settings.infiniteloop && slider.active.index == 0) return;
			var pagerindex = parseint(slider.active.index) - 1;
			el.gotoslide(pagerindex, 'prev');
		}

		/**
		 * starts the auto show
		 *
		 * @param preventcontrolupdate (boolean)
		 *  - if true, auto controls state will not be updated
		 */
		el.startauto = function(preventcontrolupdate){
			// if an interval already exists, disregard call
			if(slider.interval) return;
			// create an interval
			slider.interval = setinterval(function(){
				slider.settings.autodirection == 'next' ? el.gotonextslide() : el.gotoprevslide();
			}, slider.settings.pause);
			// if auto controls are displayed and preventcontrolupdate is not true
			if (slider.settings.autocontrols && preventcontrolupdate != true) updateautocontrols('stop');
		}

		/**
		 * stops the auto show
		 *
		 * @param preventcontrolupdate (boolean)
		 *  - if true, auto controls state will not be updated
		 */
		el.stopauto = function(preventcontrolupdate){
			// if no interval exists, disregard call
			if(!slider.interval) return;
			// clear the interval
			clearinterval(slider.interval);
			slider.interval = null;
			// if auto controls are displayed and preventcontrolupdate is not true
			if (slider.settings.autocontrols && preventcontrolupdate != true) updateautocontrols('start');
		}

		/**
		 * returns current slide index (zero-based)
		 */
		el.getcurrentslide = function(){
			return slider.active.index;
		}

		/**
		 * returns number of slides in show
		 */
		el.getslidecount = function(){
			return slider.children.length;
		}

		/**
		 * update all dynamic slider elements
		 */
		el.redrawslider = function(){
			// resize all children in ratio to new screen size
			slider.children.add(el.find('.bx-clone')).outerwidth(getslidewidth());
			// adjust the height
			slider.viewport.css('height', getviewportheight());
			// update the slide position
			if(!slider.settings.ticker) setslideposition();
			// if active.last was true before the screen resize, we want
			// to keep it last no matter what screen size we end on
			if (slider.active.last) slider.active.index = getpagerqty() - 1;
			// if the active index (page) no longer exists due to the resize, simply set the index as last
			if (slider.active.index >= getpagerqty()) slider.active.last = true;
			// if a pager is being displayed and a custom pager is not being used, update it
			if(slider.settings.pager && !slider.settings.pagercustom){
				populatepager();
				updatepageractive(slider.active.index);
			}
		}

		/**
		 * destroy the current instance of the slider (revert everything back to original state)
		 */
		el.destroyslider = function(){
			// don't do anything if slider has already been destroyed
			if(!slider.initialized) return;
			slider.initialized = false;
			$('.bx-clone', this).remove();
			slider.children.each(function() {
				$(this).data("origstyle") != undefined ? $(this).attr("style", $(this).data("origstyle")) : $(this).removeattr('style');
			});
			$(this).data("origstyle") != undefined ? this.attr("style", $(this).data("origstyle")) : $(this).removeattr('style');
			$(this).unwrap().unwrap();
			if(slider.controls.el) slider.controls.el.remove();
			if(slider.controls.next) slider.controls.next.remove();
			if(slider.controls.prev) slider.controls.prev.remove();
			if(slider.pagerel) slider.pagerel.remove();
			$('.bx-caption', this).remove();
			if(slider.controls.autoel) slider.controls.autoel.remove();
			clearinterval(slider.interval);
			if(slider.settings.responsive) $(window).unbind('resize', resizewindow);
		}

		/**
		 * reload the slider (revert all dom changes, and re-initialize)
		 */
		el.reloadslider = function(settings){
			if (settings != undefined) options = settings;
			el.destroyslider();
			init();
		}

		init();

		// returns the current jquery object
		return this;
	}

})(jquery);